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MMU: force identity mapping without pages?

hi,

on a cortex a53, I would like to get the best of both worlds. Having dcache enabled but no page walk in case of a miss.

I want no memory protection because we manage the whole system ( kind of baremetal processes)

Is there a way to tell the mmu controller that we are in identity mapping for the whole memory available, so that a page walk is not triggered?

thanks

Parents
  • Nice. :)

    And for the CPU chip, Arm might know if there are any licensees. Wikipedia has a list of them.

    Edit: If there are no vendors, does a FPGA solution fare well? I would not know if it is even possible with Arm, but I know Google and certain other companies run (or used to run) their AI processing on custom FPGA solutions.

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  • Nice. :)

    And for the CPU chip, Arm might know if there are any licensees. Wikipedia has a list of them.

    Edit: If there are no vendors, does a FPGA solution fare well? I would not know if it is even possible with Arm, but I know Google and certain other companies run (or used to run) their AI processing on custom FPGA solutions.

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